Jacob bacich



(No Model.) l

J. RACICH.

RATGHET DRLL.

No. 596,910. Patented Jan. 4, 1898.

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UNITED STATES PATENT @Einen .IACOB'RACICIL OFl NEW YORK, N. Y.A

RATcHET-p'RILL.

SPECIICATION forming part of Letters Patent No. 596,910, dated January4, 1898.

Application filed Tune 22, 189'?. Serial No. 641,841. (No model.)

T0 a'ZZ wzlom it may concern:

Be it known that I, JACOB RAcicH, of New York city, in the county andState of New York, have invented` a new and Improved Ratchet-Drill, ofwhich the following is a full, clear, and exact description.

My invention relates to an improvement in portable drills operated byratchet mechanism; and it consists in certain improvements by which thedrill is operated while the handle is being moved in either direction.

The object of the invention is to provide drills of this character withmechanism which will rotate the drill while the handle is being moved ineither direction, and also to provide such mechanism which will be ofgreater power than that commonly used for this purpose.

The invention consists of certain details which will be moreparticularly pointed out in the following specification and claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure l is a side elevation of the device. Fig. 2 is a sectionalelevation thereof. Fig. 3 is a plan view taken on the line 3 3 of Figi.Fig. 4 is a similar view taken on the line 4. 4 of Fig. 2. Fig. 5 isasection taken upon the line 5 5 of Fig. 2, and Fig. 6 is a section onthe line 6 6 of Fig. 2.

The drill S is secured in any suitable manner within the socket A. Inthe drawings I have shown a thumb-screw a for securing the drill inplace. Any mechanism for this purpose may, however, be used, as thisfeature forms no part of my invention. The socket A has a central bar A'extending above the saine and entering a hole in the sleeve E, and tothe bar A is attached the ratchet-wheel C by any suitable means.

Immediately above the ratchet-wheel C and separated therefrom by theballs C', forming an antifriction-bearing, is a plate D, which extendsto one side and upon which is mounted the fulcrum for theoperating-lever. Upon the upper side of the plate D a collar A2 is fixedto the bar A', thus preventing the plate and the ratchet-wheel fromseparating sufficiently to allow the balls C to drop out of theirgroove. To the upper surface of the plate D is also attached by screws dthe flange d 0f a sleeve D2. The inner surface of the sleeve D2 andtheouter surface of the sleeve E are correspondingly threaded, one screwingwithin the other, and these threads should be left-handed in order thatthe rotation of -the drill may be utilized to feed the saine sertedthrough the slot e', thus locking the stem' and sleeve together andcausing the sleeve to rotate with the stein A. The upper end of thesleeve E is enlarged into a toothed head E, which has a series of radialholes e, which may be engaged by a pin to feed the drill by hand, ifdesired. The up* per surface of the head E is provided with a circulargroove adapted to receive the balls J2, which lie between this head andthe foot J of the arm J, said head and foot being held together by acentral screw J3. Theupper surface of the foot .I' is preferablyroughened in order that it may securely engage any substance againstwhich it may be placed in use.

The plate D upon its outer end has a sleeve D attached to or formed as'a part thereof and extending parallel to the sleeves E and Dz-that is,parallel with the axis of the drill. Within the sleeve D is a secondsleeve F, to the lower endof which is secured, by means of a bolt f, thehead B of the operating-han dle B. These two parts may be made integral,or, as shown in the drawings, the handle B may consist of a pipescrewing upon the head B. Preferably the lower end of the sleeve F issomewhat reduced,for1ning a journal F' for the reception of the head B,which is secured to the journal F by means of a key f or other suitablefastening device. The head B has two pivots B2 and B3 located upon eachside of its centerline and between the pivot F and the axis of thedrill. To these pivots I22 and B3 are pivoted pawls or dogs l) h',provided with springs h2, holding their outer ends against theratchet-wheel C.

It will thus be seen that one of the pawls IOO or dogs l) b will operateto turn the ratchet- Wheel in whichever direction the handle is moved.`When the handle is moved in one direction, the dog h will engage theratchetwheel to turn it, and when the handle is moved in the oppositedirection the dog b' will engage the ratchet-wheel to turn it While theother dog is being withdrawn for a new hold. These dogs in theiroperation act on the same principle as a toggle-joint, thus producing apowerful actuating mechanism.

The sleeve F contains a rod G, which is centrally slotted at Gthroughout a greater vportion of ,its length. Vithin the slot Gr extendsa pin g, which also passes through the flange upon the upper end of thesleeve F, thus locking the sleeve and rod together, but permitting theirextension. To the upper end of the rod G is attached a lever II by meansof a set-screw H2 or any other suitable device. The project-ing arm ofthe lever H is provided with a slot H', and a dog or pawl I is securedtherein by means of a thumb-screw h, The pawl I has its outer end heldin engagement with the toothed head E' by means of a spring I. As thesleeve F oscillates at each oscillation of the handle B', the arm H willoscillate in a similar manner. The pawl I, engaging the teeth upon thehead E', will operate to turn the same, and thus to actuate the feed byrevolving the sleeve E. The amount of this revolution may be regulatedby adjusting the location of the thumb-screw 71,. W'hen the thumb-screwis moved to the outer end of the slot I-I, the feed will be greater thanwhen it is moved close to its inner end. In this manner the feed may beregulated to any desired extent. The feeding may be done either by hand,using a pin which is made to engage the holes c in the head E',automatically by using the arm H and pawl I, or by locking the stem Aand the sleeve E together by means of the pin e3. It is thereforepossible to secure considerable variation in the rate of feed, and thedevice may be set at such feed as is best adapted to the particularcircumstances.

It is evident that the mechanism herein described for rotating the drillmay be utilized for rotating shafts where it is desired to use theoscillating motion of a lever. It secures a nearly constant rotation ofthe shaft and enables considerable power to be applied for this purpose,due to the toggle-joint structure formed by the head B and the dogs band Z9.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A ratchet-drilloperating mechanism, comprising aratchet-wheel connected to the drill-socket, an operating-lever pivotedat one side of the axis of the drill, double pawls pivoted to said leverupon opposite sides of its center line, and a positively-operating adjustable feed mechanism actuated from said lever, substantially asdescribed.

2. A ratchet-drilloperating mechanism, comprising a ratchet-wheelconnected to the drill-socket, an operating-lever pivoted at one side ofthe axis of the drill, double pawls pivoted to said lever upon oppositesides of its center line, a back-pressure foot, a threaded cylinder andsleeve, one engaging the drillsocket and the other the back-pressurefoot, and means for rotating either the cylinder or the sleeve from ahandle-lever, substantially as described.

3. A ratchet-drill-operating mechanism, comprising a ratchet-wheelconnected to the drill-socket, an operating-lever pivoted at one side ofthe axis of the drill, double pawls pivoted to said lever upon oppositesides of its center line, a back-pressure foot, threaded sleeves, oneengaging the drill-socket and the other the back-pressure foot, atoothed feedwheel upon one of said sleeves, and a pawl engaging saidfeed-wheel and operated from a handle-lever, substantially as described.

4'. A ratchetdrilloperating mechanism, comprising a ratchet-wheelconnected tothe drill-socket, an operating-lever pivoted at one side ofthe axis of the drill, double pawls pivoted to said lever upon oppositesides of its center line, a back-pressure foot, threaded sleeves, oneengaging the drill-socket and the other the back-pressure foot, atoothed feedwheel connected to the latter, a telescopic rod connected tothe handle and the back-pressure foot, a slotted arm carried by theouter section of said rod, and a pawl adj ustably pivoted in said slotand engaging the feed-wheel, substantially as described.

`5. Ahand-drill-operating mechanism, comprising astationary frame,adrill-socket j ournaled therein, means for rotating said socketincluding an oscillating lever pivoted upon said frame by a pivotparallel to and at one side of the drill-socket, and positively-operatedadjustable feeding mechanism actuated from said lever, substantially asdescribed.

6. Ahand-drill-operating mechanism, comprising a drill-socket, meansincluding an oscillating lever pivoted to one side of the drillsocketfor rotating said socket, a threaded z sleeve forming a part of thedrillfeeding mechanism, a ratchet-Wheel attached thereto, a shaftforming an extension of the leverpivot in the direction of the sleeve,an arm attached to its outer end, and a pawl attached thereto andengaging the ratchet-Wheel, substantially as described.

7. Ahand-drill-operating mechanism, comprising a drill-socket, athreaded sleeve forming a part of the feeding mechanism, means forrotating the drill including a lever pivoted to one side of thedrill-socket, an axial shaft extending from said lever in the directionof the threaded sleeve, an arm connected to its outer end, andstep-by-step rotative means acting upon the threaded sleeve and actuatedfrom the said arm, substantially as described.

8. Ahand-drill-operatingmechanism, comprising a drill-socket, a threadedsleeve form- IOO log

IIO

ing 2t part of the feeding mechanism, means ed sleeve and rotated by thesaid paiwl, subforrotating the drill including a. lever pivotedstantially as described.

to one side of the drill-socket, an axial shaft D L extending from saidlever in the direction of JACOL RAGICH' the threaded sleeve, a slottedarm xed to the Witnesses;

outer end of said shaft, et pawl adjustable in EVERARD BOLTON MARSHALL,

said slot, and amtehetwheel upon the thread- II. L. REYNOLDS.

